Table 1.
Characteristics of patients, surgery and treatments according type of mastectomy.
| 744 mastectomies |
NSM |
SSM |
Chi2 |
|||
|---|---|---|---|---|---|---|
| excluding 4 standard mastectomies | Nb | % | Nb | % | p | |
| Age | ≤ median 49 | 201 | 56.9 | 180 | 46.0 | 0.002 |
| >49 years | 152 | 43.1 | 211 | 54.0 | ||
| Indication | Primary | 214 | 60.6 | 332 | 84.9 | <0.0001 |
| Local recurrence | 39 | 11.0 | 46 | 11.8 | ||
| Prophylactic | 100 | 28.3 | 13 | 3.3 | ||
| Bilateral | No | 258 | 73.1 | 352 | 90.0 | <0.0001 |
| Yes | 95 | 26.9 | 39 | 10.0 | ||
| Years | 2016 | 72 | 20.4 | 87 | 22.3 | <0.0001 |
| 2017 | 55 | 15.6 | 116 | 29.7 | ||
| 2018 | 118 | 33.4 | 104 | 26.6 | ||
| 2019 | 108 | 30.6 | 84 | 21.5 | ||
| Radiotherapy | No | 248 | 70.3 | 251 | 64.2 | 0.019 |
| PMRT | 51 | 14.4 | 55 | 14.1 | ||
| Previous RTH | 40 | 11.3 | 47 | 12.0 | ||
| NAC + N-RTH | 14 | 4.0 | 38 | 9.7 | ||
| Neo-adjuvant | No | 311 | 88.1 | 331 | 84.7 | 0.104 |
| chemotherapy | Yes | 42 | 11.9 | 60 | 15.3 | |
| Tobacco | No | 270 | 76.5 | 320 | 81.8 | 0.044 |
| Yes | 83 | 23.5 | 71 | 18.2 | ||
| Diabetes | No | 350 | 99.2 | 386 | 98.7 | 0.420 |
| Yes | 3 | 0.8 | 5 | 1.3 | ||
| ASA status | 1 | 156 | 44.3 | 181 | 46.3 | 0.857 |
| 2 | 189 | 53.7 | 203 | 51.9 | ||
| 3 | 7 | 2.0 | 7 | 1.8 | ||
| Breast cup size | A-B | 222 | 62.9 | 191 | 48.8 | 0.001 |
| C | 88 | 24.9 | 128 | 32.7 | ||
| > C | 43 | 12.2 | 72 | 18.4 | ||
| Histology | DCIS | 54 | 15.3 | 99 | 25.3 | <0.0001 |
| Ductal | 150 | 42.5 | 221 | 56.5 | ||
| Lobular | 47 | 13.3 | 55 | 14.1 | ||
| Others | 3 | 0.8 | 2 | 0.5 | ||
| No cancer | 99 | 28.0 | 14 | 3.6 | ||
| Axillary surgery | No | 184 | 52.1 | 132 | 33.8 | <0.0001 |
| SLNB | 140 | 39.7 | 206 | 52.7 | ||
| ALND | 29 | 8.2 | 53 | 13.6 | ||
| Implant | Definitive | 261 | 95.6 | 198 | 71.2 | <0.0001 |
| Expender | 12 | 4.4 | 80 | 28.8 | ||
| LDF | no autologous | 30 | 38.0 | 23 | 20.4 | 0.006 |
| autologous | 49 | 62.0 | 90 | 79.6 | ||
| LDF±implant | without implant | 56 | 88 | |||
| with implant | 23 | 25 | ||||
| Robotic NSM | No | 242 | 68.6 | 391 | 100 | <0.0001 |
| or endoscopic | Yes | 111 | 31.4 | 0 | 0 | |
| Robotic LDF | No | 4 | 5.1 | 63 | 55.8 | <0.0001 |
| Yes | 75 | 94.9 | 50 | 44.2 | ||
Legend: PMRT: post mastectomy radiotherapy, RTH: radiotherapy, NAC: neo-adjuvant chemotherapy, N-RTH: neo-adjuvant radiotherapy, DCIS: ductal carcinoma in-situ, SLNB: sentinel lymph node biopsy, ALND: axillary lymph node dissection, LDF: latissimus dorsi-flap, NSM: nipple sparing mastectomy. No autologous LDF: LDF without fat around muscle. Autologous LDF: LDF with fat around muscle.